Layer 3 Cisco Switch can also been used as Layer 2 only.
Is there any specific configuration in Cisco switch to verify this?
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Sign up to join this communityLayer 3 Cisco Switch can also been used as Layer 2 only.
Is there any specific configuration in Cisco switch to verify this?
Most (smaller) switches are layer-2 first, layer-3 second. So the default configuration is all layer-2. On those devices, the indicators that it's doing any layer-3 work is:
ip routing
, ip unicast routing
, etc.)no switchport
)Some of the bigger iron defaults to routed ports. They function much more like a router. For example the ages old 2948G-L3 -- the -L3 is very important. From the outside it looks just like any other 2948G (layer-2) switch, however it has a second system board (FXP1000) that turns it into a router. From the CLI, it can be hard to spot. But once configured, it'll be rather obvious:
switchport
configurations anywhereCisco layer3 switch works in both layer3 and layer2 of OSI model .
Additional features of layer 3 switch compared to layer2 switch was ..
Layer3 switch is compatible to switching & routing
Whereas layer2 switch is limited to only switching
no switchport
, IP addresses, etc.), the switch interfaces will all be layer-2 interfaces. – Ron Maupin♦ Nov 10 '20 at 23:41